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Have you had a reaction following a vaccination?

  1. Contact your healthcare provider.
  2. Report an Adverse Event using the VAERS online form or the downloadable PDF. New!

Important: If you are experiencing a medical emergency, seek immediate assistance from a healthcare provider or call 9-1-1. CDC and FDA do not provide individual medical treatment, advice, or diagnosis. If you need individual medical or health care advice, consult a qualified healthcare provider.

Vaccine Safety Information

Healthcare Professional administering a vaccine to a mother's child

Ensuring Vaccine Safety

Learn how CDC works to ensure the safety of vaccines

Individual in a lab monitoring vaccines

Safety monitoring in VAERS

Post-licensure vaccine safety monitoring using VAERS

Medical professionals in discussion

Information For Healthcare Providers

Specific information for healthcare providers

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